To Endure, To Withstand
intransitive verb, transitive verb, ichidan verb
Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means resistant. If you're resisting things, then you're enduring and withstanding them. That's why this is to endure and to withstand.
たえる
What is it that you have to endure? A barrage of tacos (た), coming at you.
彼のひどい寝起きの口臭に、耐えられなかったんです。
I couldn’t stand his awful morning breath.